2 out of 10 Prusa printers won't connect to OctoPrint via serial port
 
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Valent Turkovic
(@valent-turkovic)
New Member
2 out of 10 Prusa printers won't connect to OctoPrint via serial port

Hello,

I have currently 10 Prusa printers (and growing) in my 3D printing farm, 7 are MK3 and 3 are MK3S.

One Prusa MK3 and one Prusa MK3S just won't connect to Raspberry Pi over serial port. I use same Raspberry Pi and same usb cable to connect to other 8 printer without problems.

Also boards and serial port on both "problematic" Prusa machines works ok when I connect to a laptop. I tried updating firmware to both "problematic" printers via two different laptops, one running Linux and other Windows, and this works without problem.

I can't figure out why these two have problems connecting to Raspberry Pi over serial, any ideas?

Does Prusa have different usb to serial chips on different boards? What could cause this?

Thanks!

Posted : 01/06/2020 8:38 pm
Valent Turkovic
(@valent-turkovic)
New Member
Topic starter answered:
RE: 2 out of 10 Prusa printers won't connect to OctoPrint via serial port

A few minutes later I found this post:
https://community.octoprint.org/t/octoprint-wont-connect-to-my-prusa-mk3/13532

Changed RPI Port to off on first printer and not it connects, will try on second one as soon as it finishes current print job.

Posted : 01/06/2020 8:57 pm
cwbullet
(@cwbullet)
Illustrious Member
RE: 2 out of 10 Prusa printers won't connect to OctoPrint via serial port

Is the rPi turned on on those two printers?

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Chuck H
3D Printer Review Blog...
Posted : 01/06/2020 9:57 pm
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